Light source device and optical pulse tester
AssigneesYokogawa Electric Corporation, Yokogawa Test & Measurement Corporation
InventorsKatsushi Ota, Tsukasa Kokubo
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Abstract
A light source device includes a semiconductor laser that has a first end surface and a second end surface parallel to each other and forming a first resonator, and an optical system that is disposed on an optical path of laser light emitted from the semiconductor laser, that forms a second resonator with the second end surface of the semiconductor laser, and that has a reflection characteristic in which a reflectance with respect to light having a previously specified wavelength width centered at a specified center wavelength of the semiconductor laser is higher than the reflectance of the first end surface.
Claims10
A light source device comprising:
- a semiconductor laser that has a first end surface and a second end surface parallel to each other, the first end surface and the second end surface constituting a first resonator, and the semiconductor laser being configured to emit laser light from the first end surface;
- and
- an optical system that is disposed on an optical path of the laser light emitted from the semiconductor laser, that constitutes a second resonator with the second end surface of the semiconductor laser, and that has a reflection characteristic in which a reflectance of the optical system with respect to light of a prespecified wavelength width centered at a specified center wavelength of the semiconductor laser is higher than a reflectance of the first end surface.
Dependencies are inferred from the claim text.